hmm...i think i remember the lambda sensor... did i by any chance give you a link to one on online automotive?

anyway...

problem with error codes is they can we very vague...

if the knock sensor is faulty it can cause problems with acceleration, like hesitation and lack of power.

only problem is..if ford say it doesnt have one... im not familiar with this engine so i cant help. what year is the car?

if it does have a knock sensor the attached image should help. the red dot is the knock sensor.

you may of done actually lol, its a 54 plate so around late 2004 early 2005 but the car hasnt been right latley, if the car is sittin at about 2000rpm and i floor it, it stuggles too pick up, once its above about 4-5000 rpm it does go. the car seems sluggish latley ....ford told me that the knock sensor doesnt exist on a st170 but it does on the RS. i double checked the error codes and compared them on the internet and yes the st170 does have a knock sensor, i was lookin at some website some bloke has made about the ST170 and he has every ford part number for the car and it gives you a knock sensor, why would ford supply a knock sensor for a ST170 if it doesnt exist on the car :S:S

you may of done actually lol, its a 54 plate so around late 2004 early 2005 but the car hasnt been right latley, if the car is sittin at about 2000rpm and i floor it, it stuggles too pick up, once its above about 4-5000 rpm it does go. the car seems sluggish latley ....ford told me that the knock sensor doesnt exist on a st170 but it does on the RS. i double checked the error codes and compared them on the internet and yes the st170 does have a knock sensor, i was lookin at some website some bloke has made about the ST170 and he has every ford part number for the car and it gives you a knock sensor, why would ford supply a knock sensor for a ST170 if it doesnt exist on the car :S:S